open-discussion
open-discussion > RE: Electrode editor coordinates
Apr 25, 2019 01:04 PM | Larry Olson - Emory University
RE: Electrode editor coordinates
Originally posted by Erik Gommer:
Dear all,
I would like to use the BIS Electrode Editor to create electrode location files of grid-electrode to use in EEGlab for further processing. I exported the .mgrid files as .txt files which resulted in a file with locationx, locationy and locationz for each electrode.
Which coordinate system is used for these location files and what is the origin of the coordinate system?
Can these location files easily be transformed to EEGlab ready formats like .ced or .loc?
Thanks in advance.
Erik Gommer
I am not sure if this will be helpful
to you- but maybe to someone! I attached a Word macro that converts
BIS coordinates to Slicer coordinates (for a "centered" label
file). We no longer use this. Currently our electrode visualization
is done strictly with sEEG (no grids anymore) in Slicer with Masimo
Narizanno's automated Contact Position Estimator. It is quite
elegant, but (I know) off topic here. So, yes, it is possible to
create a transformation rule. You must work with the BIS text file
to do that. Whether or not your other programs can use it depends
on whether they can read the modified text file. But is is also
possible to create a beautiful labeling of contacts without
BIS.I would like to use the BIS Electrode Editor to create electrode location files of grid-electrode to use in EEGlab for further processing. I exported the .mgrid files as .txt files which resulted in a file with locationx, locationy and locationz for each electrode.
Which coordinate system is used for these location files and what is the origin of the coordinate system?
Can these location files easily be transformed to EEGlab ready formats like .ced or .loc?
Thanks in advance.
Erik Gommer
Threaded View
| Title | Author | Date |
|---|---|---|
| Erik Gommer | Apr 25, 2019 | |
| Larry Olson | Apr 25, 2019 | |